Granted Patent
Utility
US 5,665,156 · App. 08/731,023
Silanized silicon acids
Inventors:
Manfred Ettlinger, Dieter Kerner, Jurgen Meyer
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Oct 9, 1996
Inventors
Manfred Ettlinger
Dieter Kerner
Jurgen Meyer
Assignee (at issue)
Degussa AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.